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Other Noncurrent Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Jun. 30, 2013
Other Noncurrent Assets Disclosure [Line Items] |
Carrying amount of nonamortizable identifiable intangible asset prior to impairment | $ 113
Remaining fair value of intangible asset | 99
Impairment charge | $ 14

X
- Definition The carrying amount of a nonamortizable identifiable intangible asset prior to impairment. + References No definition available. + Details
Name: | mat_CarryingAmountOfNonamortizableIntangibleAssetPriorToImpairment
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | mat_OtherNoncurrentAssetsDisclosureLineItems
Namespace Prefix: | mat_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The remaining fair value of an intangible asset. + References No definition available. + Details
Name: | mat_RemainingFairValueOfIntangibleAsset
Namespace Prefix: | mat_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + Details
Name: | us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration